For legal purchases and activities crypto is useless, regular money is much more practical.
[1] depending on which crypto and how it's used tracking is possible, so care is required (especially) when converting dollars to crypto.
Can you? After that huge bust a few years back, I figured that particular usage was marginal at this point. Seems like the only use for crypto is ransomware, dodging taxes or smuggling embezzled money out of your country.